ASH 26 E tree strike on final — non-direct approach in deteriorating weather

On 11 June 2011 the pilot of an ASH 26 E was fatally injured when the aircraft, returning from a cross-country flight, struck trees about 580 m short of the RWY 29 threshold at Mönchsheide. Instead of a direct approach from the east Rhine side with ~285 m height reserve, he routed via the northern pattern, descending to ~145 m on base and ~95 m at the final turn in light rain and shifting wind. After rolling out at ~60 m still ~1,100 m short, the glider struck 15-20 m treetops at the forest edge.

1. Self-launch cross-country: The pilot self-launched in an ASH 26 E from the Mönchsheide glider airfield for a several-hour cross-country flight before returning to land.
2. Low, indirect approach: On return, instead of flying a direct approach from the right (eastern) Rhine side with about 285 m height reserve over the airfield, the pilot chose to route via the northern traffic pattern, committing to a longer approach path at relatively low altitude.
3. Fatigue from long flight: The pilot had been flying for about six hours mostly between 600 and 1 200 m AGL, which likely reduced his performance and judgment in the final phase of flight.
4. Deteriorating weather: In the approach area light rain and an increasingly strong, shifting wind were present, degrading performance and complicating height and distance judgment.
5. Extended low pattern: The pilot crossed to the left Rhine side at about 200 m AGL, then flew a relatively wide downwind and base leg to RWY 29, descending to about 145 m AGL on base and initiating the final turn at about 95 m AGL with 95–112 km/h indicated.
6. Too low over trees: After rolling out of the final turn at about 60 m AGL and still roughly 1 100 m from the RWY 29 threshold, the glider continued on a low final approach toward a forest edge with trees 15–20 m high, leaving insufficient clearance and glide margin.
7. Crash - fatal: Shortly before reaching the forest edge about 580 m before the RWY 29 threshold, the motor glider struck the treetops and crashed into the adjacent woods, fatally injuring the pilot and heavily damaging the aircraft.